But it wasn't long before they started coming up with jokes themselves about the controversial visit. Many also poked fun at Mexican President Enrique Peña Nieto, who has agreed to meet with Trump and whose popularity has been tanking.

"An advanced look of what we'll see tomorrow," one person tweeted Tuesday night, posting an image of the lead characters from the 1990s cartoon "Beavis and Butt-head."

Making a mask factory great again

Owners of a Halloween mask factory in Jiutepec, Mexico, told CNN's Rafael Romo earlier this year that they were busier than ever, thanks to Trump.

Trump's fame in the United States -- and infamy in Mexico -- drove demand for an unflattering Trump mask, which picked up last fall when it became clear that the Republican presidential candidate was a serious contender.

"We weren't making this mask with hair at first," co-owner Ricardo Esponda told CNN, "but some of our customers asked for it. It's got to have hair."